ISI GMBH, GERMANY

Author

Joseph H

1 Intoduction

Hello, I’m Joseph from Morocco.

Inspired by Hans Rosling’s TED Talk, I taught myself data scraping, analysis, and visualization.
This non-academic approach has given me a unique perspective, as reflected in my projects—though it also means I may require a thorough onboarding process to align with team standards.

I’m open to starting as an intern, either full-time or part-time. Regarding time zones, I’m in UTC+1, but I’m flexible and can adjust my schedule to accommodate the team’s needs.

Feel free to reach me at joseph.ergo@proton.me, and to visit my website for more projects josephelhaddad.github.io.

This custom report, generated from processing 1.4 TB of public data locally, aims to explore the workforce dynamics of a company—up to 2020.
Essentially, I am doing research on a company that does research.

2 About the project

The project came to life after realizing that web scraping doesn’t allow deep-level filtering—without consuming too much time.The irony is, this project itself took me about a month, but the final RDB contains more data than I could ever scrape.

The raw data was 1.4 TB in size and holds information previously scraped.
Processing was done on my local machine using Python, Polars, and DuckDB, following this workflow:
- Processed raw data into structured Parquet files using Polars.
- Transformed each Parquet file into mini RDBs using Polars.
- Merged all mini RDBs into one using DuckDB.
- Analyzed and filtered data to fit the current project.

Alt text

3 EDA

3.1 market research indestry’s yearly new recruit count

3.2 isi gmbh, germany’s workforce status over the years

4 Workforce sample

4.1 Alexander Franke

Job title: Project manager
Associated: False
Socials: https://linkedin.com/in/alexander-franke-4113b272

4.1.1 Alexander Franke’s working period at isi gmbh, germany

4.1.2 Gantt plot of Alexander Franke’s experience

4.2 Alina Herdt

Job title: Senior manager
Associated: True
Socials: https://linkedin.com/in/alina-herdt-6b929311a

4.2.1 Alina Herdt’s working period at isi gmbh, germany

4.2.2 Gantt plot of Alina Herdt’s experience

4.3 Arian Heidary

Job title: Master thesis student
Associated: False
Socials: https://linkedin.com/in/arian-heidary-6602ba94

4.3.1 Arian Heidary’s working period at isi gmbh, germany

4.3.2 Gantt plot of Arian Heidary’s experience

4.4 Carina Römermann

Job title: Studentische hilfskraft im bereich marktforschung
Associated: False
Socials: https://linkedin.com/in/carina-römermann-247b54173

4.4.1 Carina Römermann’s working period at isi gmbh, germany

4.4.2 Gantt plot of Carina Römermann’s experience

4.5 Christian Struck

Job title: Projektleiter qualitative marktforschung
Associated: False
Socials: https://linkedin.com/in/dr-christian-struck-828007136

4.5.1 Christian Struck’s working period at isi gmbh, germany

4.5.2 Gantt plot of Christian Struck’s experience

4.6 Christin Keßler

Job title: Junior sensory researcher
Associated: False
Socials: https://linkedin.com/in/christin-keßler-110348aa

4.6.1 Christin Keßler’s working period at isi gmbh, germany

4.6.2 Gantt plot of Christin Keßler’s experience

4.7 Daniel Moerlein

Job title: Senior manager
Associated: True
Socials: https://linkedin.com/in/daniel-mörlein-1ab51915 | https://linkedin.com/in/daniel-moerlein-1ab51915

4.7.1 Daniel Moerlein’s working period at isi gmbh, germany

4.7.2 Gantt plot of Daniel Moerlein’s experience

4.8 Gunnar Jordan

Job title: Project manager
Associated: False
Socials: https://linkedin.com/in/gunnar-jordan | https://linkedin.com/in/gunnar-jordan-82531247

4.8.1 Gunnar Jordan’s working period at isi gmbh, germany

4.8.2 Gantt plot of Gunnar Jordan’s experience

4.9 Hans-Peter Volkmer

Job title: Geschã ftsfã¼hrer
Associated: True
Socials: https://linkedin.com/in/hans-peter-volkmer-b58b01137

4.9.1 Hans-Peter Volkmer’s working period at isi gmbh, germany

4.9.2 Gantt plot of Hans-Peter Volkmer’s experience

4.10 Igor Jenner

Job title: Panelist
Associated: False
Socials: https://linkedin.com/in/igor-jenner-0306a8100

4.10.1 Igor Jenner’s working period at isi gmbh, germany

4.10.2 Gantt plot of Igor Jenner’s experience

4.11 Luisa Sandvoß

Job title: Werkstudentin
Associated: False
Socials: https://linkedin.com/in/luisasandvoß

4.11.1 Luisa Sandvoß’s working period at isi gmbh, germany

4.11.2 Gantt plot of Luisa Sandvoß’s experience

4.12 Matthias Brömlage

Job title: Master’s candidate + student assistant
Associated: False
Socials: https://linkedin.com/in/matthias-brã¶mlage-882a9810a | https://linkedin.com/in/matthias-brömlage-882a9810a

4.12.1 Matthias Brömlage’s working period at isi gmbh, germany

4.12.2 Gantt plot of Matthias Brömlage’s experience

4.13 Micha Strack

Job title: Statistician market research
Associated: True
Socials: https://linkedin.com/in/micha-strack-a6ab1312b

4.13.1 Micha Strack’s working period at isi gmbh, germany

4.13.2 Gantt plot of Micha Strack’s experience

4.14 Sarah Hemmerling

Job title: Project manager
Associated: True
Socials: https://linkedin.com/in/sarah-hemmerling-40aa0b49

4.14.1 Sarah Hemmerling’s working period at isi gmbh, germany

4.14.2 Gantt plot of Sarah Hemmerling’s experience

4.15 Viktoria Heinrich

Job title: Project manager
Associated: True
Socials: https://linkedin.com/in/viktoria-heinrich-2874bb13b

4.15.1 Viktoria Heinrich’s working period at isi gmbh, germany

4.15.2 Gantt plot of Viktoria Heinrich’s experience

4.16 Vivian Fenske

Job title: Nebenjob als geschmacksexpertin
Associated: False
Socials: https://linkedin.com/in/vivian-fenske-8b4b60164